South Africa were chasing 271 after Tabraiz Shamsi claimed 4-60 and Marco Jansen took 3-43 to help dismiss Pakistan for 270.

Aiden Markram struck 91 off 93 balls to put the Proteas in control, but his dismissal left South Africa in trouble at 250-7.

With 11 runs still needed, Lungi Ngidi fell to Haris Rauf, leaving Maharaj and Shamsi to negotiate a tense final-wicket stand.

Maharaj eventually struck Mohammad Nawaz for four through square leg to seal the victory with 16 balls to spare, sparking wild celebrations among the Proteas.